That's the question Warner Brothers is asking as it prepares to remake The Bodyguard, the runaway 1992 hit about a Secret Service agent drafted to protect a singing diva who's being hunted by a stalker.

The story will change slightly for the remake, with the agent now being an Iraq war veteran who gets the bodyguard job shortly after leaving the service. But the challenge is the same – finding two lead actors with the chemistry to make it work.